Recently, many people have asked me about the KD indicator, so today I will clearly explain the core logic of this tool and practical skills.

To be honest, the KD indicator seems complicated, but it’s actually just observing where the price has been over a certain period of time. It consists of the K line and the D line; the K line reacts quickly, while the D line reacts more slowly. Both lines fluctuate between 0 and 100. This range is cleverly designed to allow you to intuitively judge whether the price has reached an extreme.

Many people only know that KD 20 is an oversold zone and KD 80 is an overbought zone, but that’s just the basics. What’s truly useful is understanding the logic behind it. When KD values are particularly high, it indicates that buying pressure has pushed the price close to the limit, but this often means buying power is about to exhaust. Conversely, when KD is below 20, the selling pressure has mostly been absorbed, which is usually a sign of a potential bottom.

I’ve found that many traders overlook a key point in practice: simply looking at the value ranges is not enough. You need to combine the crossovers of the K and D lines. When the K line crosses above the D line from below, it’s called a golden cross, suggesting bullish momentum. Conversely, when the K line crosses below the D line from above, it’s a death cross, indicating bearish momentum takeover. Especially when a golden cross occurs near the oversold area of KD 20, its effectiveness is particularly strong.

An advanced technique is divergence signals. This is my favorite method for timing tops and bottoms. Simply put, if the price makes a new high but the KD indicator does not follow with a new high, it’s called a bearish divergence, implying momentum is waning and it’s time to consider reducing positions or taking profits. Conversely, if the price makes a new low but KD does not, it’s called a bullish divergence, often an excellent entry point.

In actual trading, my experience is that you should not rely solely on the KD indicator. The most effective approach is to look for multiple signals occurring simultaneously. For example, seeing a death cross in the overbought zone, or a golden cross combined with bullish divergence in the oversold zone, will significantly improve the win rate. I also often combine KD with RSI; when both indicators point to overbought or oversold conditions, the reversal signals become clearer.

However, honestly, the KD indicator is not万能. In strong trending markets, KD values tend to stay at extreme levels, and trading based solely on overbought or oversold zones can lead to multiple stop-outs. Additionally, in sideways consolidation, the K and D lines frequently cross back and forth, creating many false signals. Another point is that KD is based on past data; it reflects momentum but cannot precisely predict trend direction.

Therefore, my advice is to first understand the basic logic of KD, then continuously adjust in practice. Using KD in alignment with the overall trend yields the best results; never trade against the trend. If you’re trading on Gate, you can add the KD indicator to your chart and observe different timeframes. Smaller signals should give way to larger trend signals.